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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1838) Timeline service getEntities API should provide ability to get entities from given id
Date Thu, 20 Mar 2014 21:31:49 GMT

    [ https://issues.apache.org/jira/browse/YARN-1838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942317#comment-13942317
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Srimanth Gunturi commented on YARN-1838:
----------------------------------------

The _fromTs_ is needed because ATS can get events out of order. Without this parameter, a
query with _fromId_ will return varying results depending on when you call it. The _fromTs_
prevents changes to the returned list so that it is consistent. 

> Timeline service getEntities API should provide ability to get entities from given id
> -------------------------------------------------------------------------------------
>
>                 Key: YARN-1838
>                 URL: https://issues.apache.org/jira/browse/YARN-1838
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Srimanth Gunturi
>            Assignee: Billie Rinaldi
>         Attachments: YARN-1838.1.patch, YARN-1838.2.patch
>
>
> To support pagination, we need ability to get entities from a certain ID by providing
a new param called {{fromid}}.
> For example on a page of 10 jobs, our first call will be like
> [http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&limit=11]
> When user hits next, we would like to call
> [http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&fromid=JID11&limit=11]
> and continue on for further _Next_ clicks
> On hitting back, we will make similar calls for previous items
> [http://server:8188/ws/v1/timeline/HIVE_QUERY_ID?fields=events,primaryfilters,otherinfo&fromid=JID1&limit=11]
> {{fromid}} should be inclusive of the id given.



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